WO2016003597A3 - Amplificateur de commutation audio - Google Patents

Amplificateur de commutation audio Download PDF

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Publication number
WO2016003597A3
WO2016003597A3 PCT/US2015/034295 US2015034295W WO2016003597A3 WO 2016003597 A3 WO2016003597 A3 WO 2016003597A3 US 2015034295 W US2015034295 W US 2015034295W WO 2016003597 A3 WO2016003597 A3 WO 2016003597A3
Authority
WO
WIPO (PCT)
Prior art keywords
switching amplifier
audio switching
amplifier
compensation circuit
enhance operation
Prior art date
Application number
PCT/US2015/034295
Other languages
English (en)
Other versions
WO2016003597A2 (fr
Inventor
Jingxue LU
Ankit Srivastava
Matthew David Sienko
Manu Mishra
Sheng Zhang
Original Assignee
Qualcomm Incorporated
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Qualcomm Incorporated filed Critical Qualcomm Incorporated
Priority to CN201580033424.0A priority Critical patent/CN106575950A/zh
Publication of WO2016003597A2 publication Critical patent/WO2016003597A2/fr
Publication of WO2016003597A3 publication Critical patent/WO2016003597A3/fr

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/32—Modifications of amplifiers to reduce non-linear distortion
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/181—Low frequency amplifiers, e.g. audio preamplifiers
    • H03F3/183—Low frequency amplifiers, e.g. audio preamplifiers with semiconductor devices only
    • H03F3/185—Low frequency amplifiers, e.g. audio preamplifiers with semiconductor devices only with field-effect devices
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/32—Modifications of amplifiers to reduce non-linear distortion
    • H03F1/3205—Modifications of amplifiers to reduce non-linear distortion in field-effect transistor amplifiers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
    • H03F3/21—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only
    • H03F3/217—Class D power amplifiers; Switching amplifiers
    • H03F3/2171—Class D power amplifiers; Switching amplifiers with field-effect devices
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
    • H03F3/21—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only
    • H03F3/217—Class D power amplifiers; Switching amplifiers
    • H03F3/2173—Class D power amplifiers; Switching amplifiers of the bridge type
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/45—Differential amplifiers
    • H03F3/45071—Differential amplifiers with semiconductor devices only
    • H03F3/45076—Differential amplifiers with semiconductor devices only characterised by the way of implementation of the active amplifying circuit in the differential amplifier
    • H03F3/45475—Differential amplifiers with semiconductor devices only characterised by the way of implementation of the active amplifying circuit in the differential amplifier using IC blocks as the active amplifying circuit
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/03—Indexing scheme relating to amplifiers the amplifier being designed for audio applications
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/351—Pulse width modulation being used in an amplifying circuit
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2203/00—Indexing scheme relating to amplifiers with only discharge tubes or only semiconductor devices as amplifying elements covered by H03F3/00
    • H03F2203/45—Indexing scheme relating to differential amplifiers
    • H03F2203/45512—Indexing scheme relating to differential amplifiers the FBC comprising one or more capacitors, not being switched capacitors, and being coupled between the LC and the IC
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2203/00—Indexing scheme relating to amplifiers with only discharge tubes or only semiconductor devices as amplifying elements covered by H03F3/00
    • H03F2203/45—Indexing scheme relating to differential amplifiers
    • H03F2203/45528—Indexing scheme relating to differential amplifiers the FBC comprising one or more passive resistors and being coupled between the LC and the IC
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
    • H03F3/21—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only
    • H03F3/217—Class D power amplifiers; Switching amplifiers

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Multimedia (AREA)
  • Amplifiers (AREA)

Abstract

Un amplificateur de commutation selon l'invention comprend un circuit de compensation pour compenser le décalage en continu dans l'amplificateur, pour améliorer le fonctionnement de l'amplificateur de commutation. Le circuit de compensation peut comprendre un CAN SAR, où le CNA peut être utilisé pour fournir une tension de compensation. L'amplificateur de commutation peut en outre comprendre un modulateur PWM configuré pour éviter une diaphonie afin d'améliorer encore le fonctionnement de l'amplificateur de commutation.
PCT/US2015/034295 2014-06-30 2015-06-04 Amplificateur de commutation audio WO2016003597A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201580033424.0A CN106575950A (zh) 2014-06-30 2015-06-04 音频开关放大器

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US14/320,118 2014-06-30
US14/320,118 US9602062B2 (en) 2014-06-30 2014-06-30 Audio switching amplifier

Publications (2)

Publication Number Publication Date
WO2016003597A2 WO2016003597A2 (fr) 2016-01-07
WO2016003597A3 true WO2016003597A3 (fr) 2016-02-25

Family

ID=54545402

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2015/034295 WO2016003597A2 (fr) 2014-06-30 2015-06-04 Amplificateur de commutation audio

Country Status (3)

Country Link
US (1) US9602062B2 (fr)
CN (1) CN106575950A (fr)
WO (1) WO2016003597A2 (fr)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10236827B2 (en) * 2017-01-20 2019-03-19 Cirrus Logic, Inc. Offset calibration for amplifier and preceding circuit
US10224877B2 (en) 2017-01-20 2019-03-05 Cirrus Logic, Inc. Closed-loop digital compensation scheme
CN107342740B (zh) * 2017-06-15 2020-07-07 西安华泰半导体科技有限公司 一种通过逐次逼近方式校正运放失调的电路
CN108242929B (zh) * 2017-07-07 2021-11-09 西安微电子技术研究所 一种用于sar型adc的多精度抗辐照逻辑控制装置
TWI693790B (zh) * 2017-09-21 2020-05-11 美商艾孚諾亞公司 用於耳機的數位至類比轉換器及放大器
US10833642B2 (en) * 2017-10-20 2020-11-10 Synaptics Incorporated Amplifier flicker noise and offset mitigating systems and methods
CN113300680B (zh) * 2021-04-09 2023-09-15 汇顶科技私人有限公司 脉冲宽度调变放大器、相关芯片及信号宽度调变的方法
US11942959B2 (en) * 2021-09-28 2024-03-26 Infineon Technologies Ag Calibration with feedback sensing
US11644521B1 (en) 2021-11-09 2023-05-09 Cirrus Logic, Inc. Circuitry for compensating for gain and/or phase mismatch between voltage and current monitoring paths
US11855592B2 (en) 2021-11-09 2023-12-26 Cirrus Logic Inc. Calibration of pulse width modulation amplifier system
WO2023200680A1 (fr) * 2022-04-14 2023-10-19 Cirrus Logic International Semiconductor Ltd. Détermination du gain d'un système amplificateur de modulation de largeur d'impulsion
WO2023200630A1 (fr) * 2022-04-14 2023-10-19 Cirrus Logic International Semiconductor Ltd. Étalonnage d'un système amplificateur de modulation de largeur d'impulsion

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0817371A1 (fr) * 1996-06-27 1998-01-07 Harris Corporation Amplificateur classe D sans bruit de claquement à la mise sous tension
WO2001010012A1 (fr) * 1999-07-29 2001-02-08 Tripath Technology, Inc. Calibrage de decalage en continu pour amplificateur de commutation numerique
EP1091489A2 (fr) * 1999-10-05 2001-04-11 Analog Devices, Incorporated Système et procédé comparateur à plusieurs étages, récuperation rapide et tension de décalage faible
WO2002087073A2 (fr) * 2001-04-24 2002-10-31 Tripath Technology Inc. Systeme d'auto-etalonnage pour decalage en continu destine a un amplificateur de commutation numerique
US20070279126A1 (en) * 2006-06-06 2007-12-06 Texas Instruments, Incoporated common-mode technique for a digital i/p class d loop
US20080284508A1 (en) * 2007-05-15 2008-11-20 Walker Brett C Output circuits with class d amplifier
US20090115508A1 (en) * 2007-05-09 2009-05-07 Apexone Microelectronics Ltd. Switching amplifier and its modulation process
CN101847968A (zh) * 2009-03-27 2010-09-29 杭州中科微电子有限公司 高阶多路反馈结构的高性能d类音频功率放大器
US20110006843A1 (en) * 2006-07-07 2011-01-13 Yamaha Corporation Offset voltage correction circuit and class D amplifier
WO2011064787A1 (fr) * 2009-11-30 2011-06-03 ST-Ericsson India Pvt. Ltd. Réduction de bruit indésirable dans un dispositif
US20110267014A1 (en) * 2009-01-14 2011-11-03 Takayuki Nakai Electrical load drive device

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1011002C2 (nl) * 1999-01-12 2000-07-20 Univ Eindhoven Tech Versterkerschakeling.
US6614297B2 (en) * 2001-07-06 2003-09-02 Texas Instruments Incorporated Modulation scheme for filterless switching amplifiers with reduced EMI
JP4561459B2 (ja) * 2004-04-30 2010-10-13 ヤマハ株式会社 Ｄ級増幅器
US7332962B2 (en) * 2005-12-27 2008-02-19 Amazion Electronics, Inc. Filterless class D power amplifier
JP4833812B2 (ja) 2006-11-30 2011-12-07 パナソニック株式会社 Ｐｗｍ駆動装置及びその出力オフセット補正方法
KR101650812B1 (ko) 2009-03-03 2016-08-24 삼성전자주식회사 하프-브릿지 3-레벨 ｐｗｍ 증폭기 및 그 구동 방법
TWI411224B (zh) 2009-12-07 2013-10-01 Faraday Tech Corp Ｄ級放大器
WO2011071836A1 (fr) 2009-12-10 2011-06-16 Marvell World Trade Ltd Circuits et procédés d'étalonnage de décalage dans amplificateur
US20130328628A1 (en) * 2011-08-01 2013-12-12 Coretex Technology Corporation Amplifier circuits and modulation signal generating circuits therein
TWI459717B (zh) 2011-08-01 2014-11-01 Princeton Technology Corp 放大器電路與調變信號產生電路

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0817371A1 (fr) * 1996-06-27 1998-01-07 Harris Corporation Amplificateur classe D sans bruit de claquement à la mise sous tension
WO2001010012A1 (fr) * 1999-07-29 2001-02-08 Tripath Technology, Inc. Calibrage de decalage en continu pour amplificateur de commutation numerique
EP1091489A2 (fr) * 1999-10-05 2001-04-11 Analog Devices, Incorporated Système et procédé comparateur à plusieurs étages, récuperation rapide et tension de décalage faible
WO2002087073A2 (fr) * 2001-04-24 2002-10-31 Tripath Technology Inc. Systeme d'auto-etalonnage pour decalage en continu destine a un amplificateur de commutation numerique
US20070279126A1 (en) * 2006-06-06 2007-12-06 Texas Instruments, Incoporated common-mode technique for a digital i/p class d loop
US20110006843A1 (en) * 2006-07-07 2011-01-13 Yamaha Corporation Offset voltage correction circuit and class D amplifier
US20090115508A1 (en) * 2007-05-09 2009-05-07 Apexone Microelectronics Ltd. Switching amplifier and its modulation process
US20080284508A1 (en) * 2007-05-15 2008-11-20 Walker Brett C Output circuits with class d amplifier
US20110267014A1 (en) * 2009-01-14 2011-11-03 Takayuki Nakai Electrical load drive device
CN101847968A (zh) * 2009-03-27 2010-09-29 杭州中科微电子有限公司 高阶多路反馈结构的高性能d类音频功率放大器
WO2011064787A1 (fr) * 2009-11-30 2011-06-03 ST-Ericsson India Pvt. Ltd. Réduction de bruit indésirable dans un dispositif

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
CARTASEGNA D ET AL: "A 0.18-[mu]m CMOS, -92-dB THD, 105-dBA DR, third-order audio class-D amplif", 2013 PROCEEDINGS OF THE ESSCIRC (ESSCIRC), IEEE, 16 September 2013 (2013-09-16), pages 169 - 172, XP032518960, ISSN: 1930-8833, ISBN: 978-1-4799-0643-7, [retrieved on 20131028], DOI: 10.1109/ESSCIRC.2013.6649099 *

Also Published As

Publication number Publication date
CN106575950A (zh) 2017-04-19
WO2016003597A2 (fr) 2016-01-07
US9602062B2 (en) 2017-03-21
US20150381119A1 (en) 2015-12-31

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